Internal-combustion engine.



E. R. HEWITT & A! F. MASURY.

INTERNAL COMBUSTiON ENGiNE. APPLICATION FILED 0CT.16.19I4

1,148,??4 Patented Aug. 3, F515 2 SHEETS-SHEET I TTORNE Y 6 E. R. HEWITT& A. F. MASURY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT. 6. 1914.

1,148,774 Patented Aug. 3, 191 5.

2 SHEETS-SHEET 2.

A TTOR/VEYS E R. HEWITT, OF MIDfiALE, NEW JERSEY, AND ALFRED F. MAS'URY,OF NEW YORK, N. Y., ASSIGNORS TQ QTERNATIONAL MOTOR- COMPANY, OF NEWYORK, N. Y., A. GQRPORATION OF DELAWARE.

iia'rnmmn-coivrsiisrron ENGINE.

' To 'whomc't mayconcem Be it known that we, EDWARD R. HEWITT and ALFREDF. MASURY, citizens of the United States and residents of Midvale, inthe State of New Jersey, and of the city of New York, in the State ofNew York, respectively, have invented certain new and usefulImprovements in Internal-Combustion Engines, of which the following is aspecification, reference being had to the accompanying drawings, forminga part hereof.

This invention relates to internal combustion engines and has, for itsgeneral object the improvement of the crank casing of such engines andthe simplification of the gearing for the auxiliary elements of suchengines, such as the water pump, the magneto,

' adjustment to change etc., so that the gearing is made more accessiblethan heretofore, is less liable to injury or derangement and issusceptible of ready the relative phases of operation of the variousparts with respect to each other. f

[A further ob ect is be late the initial cost of manufacture oftheengime crank casing by eliminating much v offgthe machine work whichis necessary casings now known and by forming the bearings for the crankshaft, the cain shaft, and the like, in a single cap which his fasteneddetachably to.

the crank casing and constitutes part of the front wall therefor.

- In a similar manner, the present invention proposes to form the drivenauxiliary elements, such as the water pump, the magneto, and the like,as a single unit, andso related each to each as to permit theiractuationfrom a common shaft.

These and other objects will appear hereinafter as this descriptionproceeds, the invention being concerned broadly with many other featuresofengine construction tending to effect the general objects referred toabove,

Reference is now to be had to the accompanying drawings for a detaileddescription of the illustrated embodiment of the invention.

In the drawings-Figure 1 is a fragmen f tary view in front elevation ofan internal combustion engine embodying the invention the cam shaft and.the

cylinders on the crank casing.

'neto. Fig. 2 is a fragmentary view, partly Patented Aug. 3, i9i5.

Application filed October 16, 1914. Serial No. 866,897. I i

in vertical section and partly in side elevation, of the engineillustrated in Fig. 1 and showing particularly the simple and compactrelationship between the parts thereof. The body portion of the crankcasing a may be of the usual form and for this reason it has been deemedunnecessary to show all of it, the present lmprovements being found 1nthe construction of one end only of the crank casing, as, for instance,the front end thereof.

Egr'thermore, the present improvements are concerned with theconstruction of the usual engine cylinders, one of'which is indlcated atb, or the mode of mounting such pose of this description, however, ithas been deemed desirable to indicate that the usual crank shaft 0 isdriven through one or more pitmans '0: extending from the usual pistons(not illustrated) "arranged within the respective *cylinders. The crankshaft 0 may find its principal bearings a carried by the crank casing atoward the front end of the latter. Gn the extreme forward end of thecrank shaft 0 thereis secured, in the present invention, a gear 0 whichhas its tie5e th cut along an angle of substantially With gear 0 meshesa similar gear d which is keyed on the cam shaft d, one of the bearingsa of which is formed in the crank case a. It is through the engagementofthe gears c and d that the cam shaft d receives its rotative movementfrom the crank shaft 0. This rotative movement, in

.the improved engine, is further transmitted ,from the gear d to a shaft6, as through anatively to two of the usual auxiliary elements of aninternal combustion engine, namely, a water pump f and a magneto g. Theconstruction described constitutes, in eflect, a unit construction, asregards the water pump and magneto 9, although it is to be noted thatthe shaft 6 is detachably coupled, as at it, to the shafts v7" and g ofthe water pump 7 and the magneto g respectively. The up per well of thecrank casing a is cast with an For the purv with the said gear on thecam shaft.

opening through which the gear d extends to objects of the invention hasbeen realized by simplifying the construction and relationship of thegearing and the auxiliary elements, such as the magneto and the waterpump, driven thereby, by mounting the gearing adjacent the front end ofthe crank casing and by having a gear on the cam shaft enmeshed directlywith a gear on thecrank shaft, and by providing a single drive shaft forthe water pump and the magneto on which is afiiXed a gearalso directlyenmesiied ot only does this construction cheapen the cost of manufactureand minimize the liability of the mentioned parts to injury andderangement, but it also facilitates the assemblingof all of these partsand the ready repair or replacement of any one of them.

Another feature of the invention resides particularly in theconstruction of that portion of the crank casing on which are mountedthe improved elements hereinbe fore described. In carrying out suchimprovements to the crank casing, it has been sought to reduce as 'faras possible the the crank casing a has an opening formed in its frontwall to permit access to the in- .terior' of the casing and the edge ofthis opening is machined, as ata to insurethe usual oil-tight union witha cap '5 detachably secured to the front wall of the casing by means ofbolts 71', The crank casing (1' also has its upper face machined, as ata,

' e along a single horizontal plane to afford the usual support for thecylinders b and permit the attachment of the gear housing 0 therto, as.through bolts e, and also to which bases pass suitable securing'bolts fand g respectively, into the upperface of the crank casing a.. Itappears from Fig.

1 that the cap z may extend slightly above the upper machined edge ofthecasing a and be united with the base a of the gear housin e In all,then, the crank casing a, in so ar asconcerns the mounting of thecylinders, the cam shaft, the water pump, and the magneto, or likeparts, need only be machined alongits face to receive the cap 71 andalong its upper face to receive the cylindersb and the bases ,1, g and eof the water pump, the magneto, and the gear 7 housing respectively. Bydisposing the magneto and the Water pump alongside the cylinders spaceis economized as the height of the cylinders determines the height ofthe entire motor.

The improved engine provided by the present invention also lends itselfto the introduction of a further advantageous feature, namely, theformation of the bearings for the starting crank shaft and the cam shaftin the cap 2', thereby greatly facilitating the assembling of the partsand the inspection of the interior of the casing. It

will be seen from Fig; 2 that. the cam shaft d, or the extensionthereof, on which may be'fixed agovernor or other needful elerotation isimparted manually to the crank shaft 0, in a well known manner, is alsosup ported inthe said cap. Upon the removal of the cap i,'the gear andother bearings for the crank shaft 0 and the cam shaft 03 may be readilyinspected, but itis to be noted particularly that the removal of the capi and such subsequent inspection or replacement of anyof the parts inthe crank casing, in nowise disturbs any of the auxiliary elements, suchas the water pump f, and the magneto .g or the driving mechanism therefor. Conversely, itmight be pointed out here, that the pump "f, gearhousing e and the magneto g, or any one of them, with their respectivedriving shafts and their common actuating gear e, may be removed readilyfrom their usual positions byremoval of-their securing bolts withoutdisturbing the cap a or any .of' the bearings formed therein. Thesimplicity of this construction and the ease with which it permits theaverage mechanic toinspect, repair, or replace, any bearing, shaft,gear, or other element needful to the efficient operation of any of themechanism described, will commend itself to those skilled. in the art.

The ears'c" and d, by reason of the angular teet thereon, it is evident,may be moved axially along their respective supporting shafts a, d, soas to permit their, removal 4 from said shafts, or'they maybe movedain'- ally a slight distance so as to change their angular relation toeach other and thereby tionship between the respective phases of changeto a greater or less extent the relaoperation of the mechanismoperatively con- I gear a shim or washer and then resecuring such gearin position on its shaft. No such shim or washer is illustrated in theaccompanying drawings inasmuch as the parts are shown in their normaland proper operating relation, but the effect of such a shim, in theposition indicated will be obvious.

The compactness of the improved en 'ne and the great economy of spaceeifecte by the mounting of the magneto and water pump on the crankcasing in front of the cylinders, need not be elaborated on, since a'comparison of this construction with those now known will make theseadvantages manifest.

Changes in the details of construction, rearrangement of the illustratedparts and substitution of other parts for those illustrated, may be madewithout departing from the spirit of the invention, provided all suchchanges, rearrangements and substitutions fall within the scope of theappended claim.

We claim as our invention:

In combination, a crank casing provided with an extension at one end andhaving a slot in the upper wall of the extenslon formed in the frontedge thereof, a crank shaft, acam shaft, a gear on the cam shaft engagedoperatively by the crank shaft, the gear on the cam shaft being disposedopposite said slot but having its teeth below the surface of the saidextension, a magneto and a water pump both mounted on the upper face ofthe extension and provided with a common shaft, a gear on the commonshaft extending through the said slot to mesh with the gear on the camshaft, a gear housing secured on the upper face of the extension overthe slot and the last named gear, a detachable cap" mounted on the endwall on said extension to afford accem to the interior of the casing andpermit the gear on the cam shaft to be removed from the casing withoutdisturbing the magneto, the water pump, the driving mechanism, and thehousin% therefor.

his specification signed and witnessed this 14th day of October A. D.1914.

EDWARD R. HEWITT. ALFRED F. MASURY. Signed in the presence of H. M.HENDRIOKSON, M. FRINs.

